POLYUNSATURATED

\pˌɒlɪˈʌnsɐt͡ʃəɹˌe͡ɪtɪd], \pˌɒlɪˈʌnsɐt‍ʃəɹˌe‍ɪtɪd], \p_ˌɒ_l_ɪ__ˈʌ_n_s_ɐ_tʃ_ə_ɹ_ˌeɪ_t_ɪ_d]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd